take it upon oneself

== English == === Pronunciation === === Verb === take it upon oneself (third-person singular simple present takes it upon oneself, present participle taking it upon oneself, simple past took it upon oneself, past participle taken it upon oneself) (idiomatic) To assume personal responsibility for a task or action. ==== Usage notes ==== Sometimes used in a critical sense, where a person has unilaterally decided to do something undesirable. === See also === take upon oneself